Safety in electroheat installations -- Part 11: Particular requirements for installations using the effect of electromagnetic forces on liquid metals

This part of IEC 60519 applies to installations predominantly using the effect of electromagnetic forces on liquid metals: - installations for electromagnetic (induction) stirring or transport of liquid metals at low frequencies; - installations that influence the pouring process by an electromagnetic field; - parts directly affected by the electromagnetic stirring, transport or pouring installation. Examples of application: - stirring devices for casting machines, arc furnaces, ladles, etc.; - transport of liquid metal for emptying or filling furnaces, launders or moulds; - devices to transport liquid metal with simultaneous proportioning of the transported quantity, for example, for filling diecasting machines; - influencing the ingot surface or the pouring stream enhancing crystallization by means of an electromagnetic field during continuous casting; - sealing of mechanical gaps of melt vessels, for example, in vertical galvanizing line. This standard consists of - requirements common to installations using the effect of electromagnetic forces on liquid metals; - specific requirements for electromagnetic pouring equipment (Annex A); - specific requirements for electromagnetic equipment with lining (Annex B).

Sicherheit in Elektrowärmeanlagen - Teil 11: Besondere Anforderungen an Anlagen, die die Wirkung elektromagnetischer Kräfte auf flüssige Metalle nutzen

Sécurité dans les installations électrothermiques -- Partie 11: Exigences particulières pour les installations utilisant l'effet des forces électromagnétiques sur les métaux liquides

Contient les exigences particulières pour les installations utilisant l'effet des forces électromagnétiques sur les métaux liquides; les exigences particulières pour les installations pour coulée électromagnétique; les exigences particulières pour les installations avec garnissage. Doit être utilisée conjointement avec la CEI 60519-1. Les modifications significatives par rapport à l'édition antérieure sont les dernières éditions de la CEI 60519-1:2003 et de la CEI 60519-3:2005 qui ont été prises en compte.

Varnost pri električnih grelnih inštalacijah - 11. del: Posebne zahteve za inštalacije, ki uprabljajo učinke elektromagnetnih sil na tekoče kovine (IEC 60519-11:2007)

General Information

Status
Published
Publication Date
22-Nov-2007
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
04-Oct-2007
Due Date
09-Dec-2007
Completion Date
23-Nov-2007

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Safety in electroheat installations - Part 11: Particular requirements for installations using the effect of electromagnetic forces on liquid metalsSécurité dans les installations électrothermiques - Partie 11: Exigences particulieres pour les installations utilisant l'effet des forces électromagnétiques sur les métaux liquidesSicherheit in Elektrowärmeanlagen - Teil 11: Besondere Anforderungen an Anlagen, die die Wirkung elektromagnetischer Kräfte auf flüssige Metalle nutzenTa slovenski standard je istoveten z:EN 60519-11:2007SIST EN 60519-11:2008en,fr,de25.180.10Electric furnacesICS:SIST EN 60519-11:19991DGRPHãþDSLOVENSKI

STANDARDSIST EN 60519-11:200801-januar-2008
EUROPEAN STANDARD EN 60519-11 NORME EUROPÉENNE
EUROPÄISCHE NORM September 2007

CENELEC European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2007 CENELEC -

All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 60519-11:2007 E
ICS 25.180.10 Supersedes EN 60519-11:1997
English version
Safety in electroheat installations -
Part 11: Particular requirements for installations
using the effect of electromagnetic forces on liquid metals (IEC 60519-11:2007)
Sécurité dans les installations électrothermiques -
Partie 11: Exigences particulières
pour les installations utilisant l'effet
des forces électromagnétiques
sur les métaux liquides (CEI 60519-11:2007)
Sicherheit in Elektrowärmeanlagen -
Teil 11: Besondere Anforderungen
an Anlagen, die die Wirkung elektromagnetischer Kräfte
auf flüssige Metalle nutzen (IEC 60519-11:2007)

This European Standard was approved by CENELEC on 2007-09-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom.

EN 60519-11:2007
- 2 -

Foreword The text of document 27/577/FDIS, future edition 2 of IEC 60519-11, prepared by IEC TC 27, Industrial electroheating equipment, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 60519-11 on 2007-09-01. This European Standard supersedes EN 60519-11:1997. The significant changes with respect to EN 60519-11:1997 are as follows: – EN 60519-1:2003 and EN 60519-3:2005 have been taken into account; – definitions have been brought into line with IEC 60050-841:2004. This standard is to be used in conjunction with EN 60519-1:2003. It is intended to specify particular requirements for installations using the effect of electromagnetic forces on liquid metals. The following dates were fixed: – latest date by which the EN has to be implemented

at national level by publication of an identical
national standard or by endorsement
(dop)
2008-06-01 – latest date by which the national standards conflicting
with the EN have to be withdrawn
(dow)

2010-09-01 Annex ZA has been added by CENELEC. __________ Endorsement notice The text of the International Standard IEC 60519-11:2007 was approved by CENELEC as a European Standard without any modification. __________

- 3 - EN 60519-11:2007 Annex ZA
(normative)

Normative references to international publications with their corresponding European publications

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

NOTE

When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies.

Publication Year Title EN/HD Year
IEC 60050-841 2004 International Electrotechnical Vocabulary -
Part 841: Industrial electroheat - -
IEC 60110-1 1998 Power capacitors for induction heating installations -
Part 1: General EN 60110-1 1998
IEC 60143-1 2004 Series capacitors for power systems -
Part 1: General EN 60143-1 2004
IEC 60364-4-41 (mod) 2005 Low-voltage electrical installations -

Part 4-41: Protection for safety - Protection against electric shock HD 60364-4-41 + corr. July

2007 2007
IEC 60519-1 2003 Safety in electroheat installations -
Part 1: General requirements EN 60519-1 2003

CISPR 11 (mod) -1) Industrial, scientific and medical (ISM) radio-frequency equipment -

Electromagnetic disturbance characteristics -
Limits and methods of measurement EN 55011 20072)
1) Undated reference. 2) Valid edition at date of issue.

INTERNATIONAL STANDARD IECCEI NORME INTERNATIONALE60519-11Second editionDeuxième édition2007-06 Safety in electroheat installations – Part 11: Particular requirements for installations using the effect of electromagnetic forces on liquid metals

Sécurité dans les installations électrothermiques –Partie 11: Exigences particulières pour les installations utilisant l’effet des forces électromagnétiques

sur les métaux liquides P Commission Electrotechnique InternationaleInternational Electrotechnical CommissionPRICE CODE CODE PRIX For price, see current cataloguePour prix, voir catalogue en vigueur

– 2 – 60519-11 © IEC:2007 CONTENTS FOREWORD...........................................................................................................................3

1 Scope...............................................................................................................................5 2 Normative references........................................................................................................5 3 Terms and definitions.......................................................................................................6 4 Inductor............................................................................................................................7 5 Capacitors........................................................................................................................7 6 Mains-frequency power sources........................................................................................8 7 Solid-state frequency converters.......................................................................................8 8 Switchgear........................................................................................................................9 9 Cables, wires and busbars................................................................................................9 10 Liquid cooling.................................................................................................................10 11 Rating plate....................................................................................................................10 12 Clearance and creepage distances.................................................................................11 13 Protection against electric shock.....................................................................................11 13.1 Protection against direct contact............................................................................11 13.1.1 Permissible touch voltage as a function of frequency..................................11 13.1.2 Accessibility of electrical equipment...........................................................11 13.1.3 Accessible plugs and sockets.....................................................................11 13.1.4 Special requirements for live conductors at voltage bands 2 and 3.............11 13.2 Protection against indirect contact.........................................................................12 13.2.1 Permissible touch voltage as a function of duration and frequency..............12 13.2.2 Electrical insulation resistance...................................................................12 13.3 Special requirements.............................................................................................12 13.4 Earthing provisions................................................................................................13 13.5 Protective conductors............................................................................................13 14 Radio interferences.........................................................................................................14 15 Operation instructions.....................................................................................................14

Annex A (normative)

Specific requirements for electromagnetic pouring equipment..............15 Annex B (normative)

Specific requirements for electromagnetic equipment with lining...........16
60519-11 © IEC:2007 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION ______________
SAFETY IN ELECTROHEAT INSTALLATIONS –

Part 11: Particular requirements for installations using the effect of electromagnetic forces on liquid metals

FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and non-governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested IEC National Committees.

3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any misinterpretation by any end user. 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximum extent possible in their national and regional publications. Any divergence between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter. 5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment declared to be in conformity with an IEC Publication. 6) All users should ensure that they have the latest edition of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical committees and IEC National Committees for any personal injury, property damage or other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications.

8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 60519-11 has been prepared by IEC technical committee 27: Industrial electroheating equipment. This second edition cancels and replaces the first edition published in 1997 and constitutes a technical revision. The significant changes with respect to the previous edition are as follows: • the latest editions of IEC 60519-1:2003 and IEC 60519-3:2005 have been taken into account; • definitions have been brought into line with the second edition of IEC 60050-841:2004. This standard is to be used in conjunction with IEC 60519-1:2003. It is intended to specify particular requirements for installations using the effect of electromagnetic forces on liquid metals.

– 4 – 60519-11 © IEC:2007 The text of this standard is based on the following documents: FDIS Report on voting 27/577/FDIS 27/585/RVD

Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. The list of all parts of the IEC 60519 series, under the general title Safety in electroheat installations, can be found on the IEC website. The committee has decided that the contents of this publication will remain unchanged until the maintenance result date indicated on the IEC web site under "http://webstore.iec.ch" in the data related to the specific publication. At this date, the publication will be

• reconfirmed, • withdrawn, • replaced by a revised edition, or • amended.
60519-11 © IEC:2007 – 5 –
SAFETY IN ELECTROHEAT INSTALLATIONS –

Part 11: Particular requirements for installations using the effect of electromagnetic forces on liquid metals

1 Scope This part of IEC 60519 applies to installations predominantly using the effect of electromagnetic forces on liquid metals: − installations for electromagnetic (induction) stirring or transport of liquid metals at low frequencies; − installations that influence the pouring process by an electromagnetic field; − parts directly affected by the electromagnetic stirring, transport or pouring installation. Examples of application: − stirring devices for casting machines, arc furnaces, ladles, etc.; − transport of liquid metal for emptying or filling furnaces, launders or moulds; − devices to transport liquid metal with simultaneous proportioning of the transported quantity, for example, for filling diecasting machines; − influencing the ingot surface or the pouring stream enhancing crystallization by means of an electromagnetic field during continuous casting; − sealing of mechanical gaps of melt vessels, for example, in vertical galvanizing line. This standard consists of − requirements common to installations using the effect of electromagnetic forces on liquid metals; − specific requirements for electromagnetic pouring equipment (Annex A); − specific requirements for electromagnetic equipment with lining (Annex B). NOTE When applying IEC 60519-1 in conjunction with this standard, the terms "electroheat installation" or "electroheat device" should be replaced by the term "installation using the effect of electromagnetic forces on liquid metals". 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60050-841:2004, International Electrotechnical Vocabulary – Part 841: Industrial electroheat IEC 60110-1:1998, Power capacitors for induction heating installations – Part 1: General

– 6 – 60519-11 © IEC:2007 IEC 60143-1:2004, Series capacitors for power systems – Part 1: General IEC 60364-4-41:2005, Low-voltage electrical installations – Part 4-41: Protection for safety –Protection against electric shock IEC 60519-1:2003, Safety in electroheat installations – Part 1: General requirements CISPR 11, Industrial, scientific and medical (ISM) radio-frequency equipment – Electromagnetic disturbance characteristics – Limits and methods of measurement 3 Terms and definitions For the purpose of this document, the terms and definitions given in IEC 60519-1 and IEC 60050-841 (some of which are repeated here), as well as the following apply. 3.1

installation using the effect of electromagnetic forces on liquid metals installation composed of the inductor and the electric and mechanical equipment used to exercise an intended effect of electromagnetic forces on liquid metals 3.2

electromagnetic stirring of liquid metals procedure to achieve stirring motion in liquid metals by using an electromagnetic field [IEV 841-27-24, modified] 3.3

electromagnetic transport of liquid metals procedure to move liquid metals in a defined direction using an electromagnetic field [IEV 841-27-25, modified] 3.4

electromagnetic casting of liquid metals procedure to shape the liquid metal stream or to influence its surface quality after pouring by the use of an electromagnetic field [IEV 841-27-26] 3.5

enhancing crystallization of liquid metal in electromagnetic fields procedure to shape a form and structure of metal crystals in an electromagnetic field [IEV 841-27-27] 3.6

inductor part of an installation (for example, coil(s)) using the effect of electromagnetic forces on liquid metals which produces the electromagnetic field to yield the required electrodynamic force NOTE Inductor is defined in IEV 841-27-47, but for the purpose of this standard this more specific definition is needed.

60519-11 © IEC:2007 – 7 –

4 Inductor 4.1 Inductors with high power ratings may be equipped with yokes (coil flux guides) to guide the magnetic flux outside the induction coil(s) to reduce stray fields possibly heating the surrounding metal structure. The design of these yokes should take care of the risk of them being excessively heated by eddy currents. 4.2 Where the inductor or parts of it are intended to be replaced due to wear or exchanged to meet a new production requirement, the manufacturer's instructions shall be followed. 4.3 Should the effect of cooling of the inductor become insufficient and cause danger to personnel or damage to essential parts of the equipment, an alarm signal shall be given and the power switched off automatically. In the case where a sudden interruption of power could cause a possible hazard to personnel, due to liquid metal splashes, a controllable reduction of power is recommended. 4.4 For installations using the effect of electromagnetic forces on liquid metals with forced cooled inductors having a charge and/or lining of high heat capacity, it is advisable to have an emergency supply for cooling the coil(s) and, where applicable, the conveying equipment until the hot charge has been removed and until the lining has cooled to a safe temperature. 4.5 The design of the inductor shall take into account the concentrated electromagnetic forces due to the high values of low-frequency current in the coil(s) that can produce vibrations and local field concentrations. 4.6 The inductor shall be designed and manufactured s

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